HYPROMELLOSE ACETATE SUCCINATE AND METHOD FOR PRODUCING THE SAME

EPO Patent Application EP 3318/283 A1
Application Date: May 9th, 2018

ABSTRACT

There are provided HPMCAS (hypromellose acetate succinate) having such a property that a solution of the HPMCAS in a solvent has a controlled viscosity; and a method for producing the...
Assignee(s):
Inventor(s):
MATSUBARA, Junichi
MARUYAMA, Naosuke
YOSHIDA, Mitsuhiro
Application Number:
17199574.9
International Classification:
A61K 47/38 (20060101); A61K 9/28 (20060101); C08B 13/00 (20060101)
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CLAIMS

What is claimed is:

Hypromellose acetate succinate having such a property that a solution of 10 parts by weight of the hypromellose acetate succinate in 100 parts by weight of a mixed solvent having a weight ratio of methylene chloride to methanol of 1:1 has a viscosity at 20°C of 135 mPa·s or less.

DESCRIPTION

BACKGROUND OF THE INVENTION

The invention relates to hypromellose acetate succinate and a method for producing the hypromellose acetate succinate.
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